You can use the TierraCast 4mm black finish Brass rivet set in multiple ways. These small rivets are great for making cold connections on metal and can be used to add embellishments to leather accessories. This rivet set features a black finish, so you can create a dramatic contrast within your designs. These rivets are made from 100% lead-free Brass, so they are safe for everyone to wear! Try them in your designs for trendy looks everyone will love. These rivets are available in packs of ten.